A Bridgeless, Stacked Switch-Pair-Based AC/DC On-Board High-Voltage EV Charger With Minimal Storage Capacitance Featuring Continuous Secondary-Side High-Frequency Rectifier Control
Bibliographic record
Abstract
In this paper, a fully soft-switched single-stage bridgeless stacked switches-based rectifier with reduced storage capacitance and minimized low-frequency output voltage ripple for high-voltage (HV) Electric Vehicle (EV) systems is proposed. Generally, bulky DC-link and filter electrolytic-type capacitors used in AC-DC converters reduces the converter’s reliability and life-span. To address this issue, a bridgeless AC-DC isolated converter with stacked switches configuration on both the primary and secondary sides that employs a continuous secondary side duty ratio control to reduce the low frequency output voltage ripple is presented. A front-end primary side duty ratio control for achieving power factor correction (PFC) for the integrated bridgeless boost PFC is also employed. The stacked switches-based configuration of the converter reduces the voltage stress of the switches to half of the DC-link voltage, making the converter suitable for HV battery systems. Soft-switching operation is guaranteed for all the semiconductor devices. Additionally, output voltage regulation is achieved through a Variable Frequency (VF) control on the primary-side switches. The steady-state and dynamic performance of the proposed converter and the designed control system are verified using a 1.1kW, 120V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rms</sub> /800V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dc</sub> , 100-120kHz SiC proof-of-Concept proto-type in the laboratory.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.002 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".